David Herro's Oakmark funds have brought in huge returns over the past 30 years, and Morningstar named him international fund manger of the decade in 2010.
Herro told Business Insider about the stocks he added to his portfolios and the former favorites he bet big on after stocks tanked in February and March.
As a value investor looking for bargains, Herro explains why he moved money into unpopular stocks like European banks.
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David Herro wasn't...
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